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Merge branch 'master' of https://github.com/nagyrobi/esphome-dmx512

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H. Árkosi Róbert
2022-01-20 18:48:39 +01:00
parent eacf265679 37fc18e0e7
commit ff02442aae
1 changed files with 3 additions and 3 deletions
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README.md
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@@ -88,7 +88,7 @@ You can use an RS485-TTL adapter module to connect your ESP device with the DMX
For this adapter, use the wiring below:
```
MAX485-M VCC -> ESP +5V
MAX485-M VCC -> ESP +3.3V
MAX485-M GND -> ESP GND
MAX485-M RE & DE -> ESP +3.3V
MAX485-M DI -> ESP32 GPIO5 or ESP8266 GPIO2 (as per examples above)
@@ -97,5 +97,5 @@ MAX485-M B -> XLR 2 (DMX -)
MAX485-M GND -> XLR 1 (DMX GND)
```
Don't forget about 120Ohm termination resistors. If your fixture has DMX IN and OUT ports, on the OUT port or the last fixture in the chain you should use a termination resistor between XLR pins 2 and 3. Similarly on MAX485-M, it has to be placed in parallel with A and B outputs, given that it's going to be placed at the start of the chain.
Using good quality 120Ohm impedance cables, DMX lines can be run a maximum distance of approximately 1000 metres. With CAT5 cable DMX lines are safe until approximately 300 meters.
Don't forget about 120Ohm termination resistors. If your fixture has DMX IN and OUT ports, on the OUT port of the last fixture in the chain you should use a termination resistor between XLR pins 2 and 3. Similarly on MAX485-M, it has to be placed in parallel with A and B outputs, given that it's going to be placed at the start of the chain.
Using good quality 120Ohm impedance cables, DMX lines can be run a maximum distance of approximately 1000 metres. With CAT5 cable DMX lines are safe until approximately 300 meters.